Riveting machine



March 1 5, 1932.

R. W. GLASNER ET AL.

RIVETING MACHINE Filed May 1, 1930 4 Sheets-Sheet 1 Mamh 1932- I R. w.GLASNER ET AL 1,849,619

RIVETING MACHINE Filed May 1, 1930 4 SheetsSheet 2 March 15, 1932. R w,GLASNER ET 1,849,619

RIVETING MACHINE Filed May 1, 1950 4 Sheets-Sheet 5 I JfOd/fi @y w March15, 1932. R w, s -r AL 1,849,619

RIVETING MACHINE Filed May 1, 1930 4 Sheets-Sheet 4 Patented Mar. 15,1932 RUDOLPH W. GLAsN ER. FREDRIGH" J. ROBE, OF CHICAGO, ILLINOISRIvET'I-NG MACHINE Application filed May 1,

In our application Serial No. 401,286, filed October 21, 1929, there isshown anddes'cribed a riveting machine having a yielding bed controlledby fluid pressure means and so constructed as to provide an auxiliaryreservoir, which latter is embedded in and constitutes an integral partof the press, thereby eliminating the installment of accessories, suchas separate tan is, piping, couplings and the like,

. the cushioning means being arranged directly opposite the lowerriveting die, thereby eliminating the use of leverages for exerting ayielding pressure on the dies and also elimi nating binding strains andstresses on such levers.

The said application also discloses means for automatically compensatingdifferent or varying thicknesses of the material being operated upon,yielding means being provided to exert the proper blow necessary for thesetting of rivets in a machine having a fixed throw.

It is one of the objects of the present invention to embody in a machineof this character means whereby the bed of the press and the cushioningmeans may be swung out of the way when desired.

A further object is to provide improved means whereby the bed of thepress may be adjusted vertically to vary the size of the working spacebetween the co-operating dies.

To the attainment of these ends and the accomplishment of other new anduseful objects as will appear, the invention consists in the features ofnovelty in substantially the construction, combination and arrangementof the several parts, hereinafter more fully described and claimed andshown in the accompanying drawings illustrating this invention, and inwhich "Figure l is a View partly in elevation, partly in verticalsection and partly broken away, of a riveting machine of this character'constructed in accordance with the principles of this invention andshowing the parts in one position.

Figure 2 is a detail sectional view taken on line 22, Figure 1, on anenlarged scale.

Figure 3 is an irregular sectional view taken on line 33, Figure 2.

1930. Serial No. 443,874.

Figure i is a sectional view taken on line 4.4-, Figure 2. p

Figure 5 is a top plan view of Figure 4, with parts omitted and showingthe cushion and bed of the press swung out of position.

Figure 6 is a detail sectional view taken on line 6-6-, Figure 2.

Referring more particularly to the drawings the numeral 10 designatesgenerally the supporting structure of the machine, provided with areciprocable ram 11 to which is connected a die 12. T he ram slides uponsuitable guides 13 and is connected by means of connecting members 14with a slide 15 which in turn is connected by means of a crank arm 16with a shaft 17, the latter receiving motion preferably from a pulley 18driven from any suitable source, which in turn operates a gear 19 thatmeshes with a gear 20 connected with the shaft 17-.

Supported by the frame of the machine is a cushioning device preferablycomprising a cylinder 21 that is secured in position in the press bymeans of fastening bolts 22 having heads 23 which are adjustable inslots 24 in a surface 25 constituting a part of the framework of themachine.

These bolts pass through suitable apertures in flanges 26 and nuts 27are provided on the bolts.

Operable within the cylinder 21 is a piston 28 which extends beyond thetop of the cylin= der and a packing gland or stuffing box 29 is providedto form a fluid tight joint.

The bed 30 of the machine is supported by the piston 28 and mounted uponthe bed 30 is a die 31 which co-operates with the die 12.

Formed within the body of the machine is a tank or reservoir 32 forsupplying fluid to the cylinder 21 through the medium of a pipe 33leading from the reservoir 32 to an upright member 34 having a tubularportion 35 and discharging into the cylinder through a passage 36leading into the bottom of the cylinder.

The fluid is supplied to the reservoir in any suitable mannerandconnected with the reservoir above the fluid line is a pipe 37 bymeans of which fluid pressure may be admitted to the reservoir above theliquid to force the latter therefrom and into the cylinder 21, therebyserving as a means for raising the piston 28 and returning the bed 50 tonormal position. Likewise when the bed plate 30 which acts as a pressurepad, is forced downwardly to force the piston downwardly in the cylinder21, the fluid in the cylinder will be forced back into the reservoir 32through the same connecting passage.

A pressure regulating valve 39 and a pressure gauge 40 may be providedin the pipe line 37.

Arranged in the passa e 36 is a valve 41 for controlling the delivery ofthe fluid from the cylinder 21 back to the reservoir 32 and this valveacts as a variable resistance pressure creating means in the cylinder21.

To that end the valve 41 is adapted to be seated and held seated by apredetermined pressure, such for instance as fluid pressure controlledmeans embodying a cylin ler 42 which is connected with the valve 41 bymeans of a rod 43. lVithin the cylinder is a piston 44 which is heldstationary. Connected vith the piston 44 is a supply pipe 45 which opensthrough the piston and into tl e cylinder Fluid pressure from anysuitable source is supplied to the pipe 45 through a pipe 46. and afluid pressure regulating valve 47 and pressure gauge 48 may be arrangedin the pipe 45. By adjusting or varying the pressure oi the fluid in thecylinder 42 the degree of pressure upon the liquid in the cylinder 21necessary to unseat the valve 41 to permit the escape of liquid from thecylinder, may be varied.

lVhen the valve 41 is unseated against the pressure in the cylinder 42the liquid will be delivered back to the reservoir 32 through the pipeconnection.

A passage 49 also leads from the bottom of the cylinder 21 and hascommunication with the passage 36 preferably with an enlarged portion 50of the latter passage in which the valve 41 is located. A valve 51 isprovided for controlling the passage 49 and this valve is normallyseated by means of a spring 52, and the valve 51 operates in a directionto prevent escape of the liquid from the cylinder 2-1. but will openunder the pressure of the fluid in the reservoir 32 to permit the liquidto be delivered into the cylinder 21 beneath the piston 28 when thevalve 41 is seated, and thereby raise or return the piston 28 to itsnormal position.

All of the above referred to parts are substantially the same asdescribed in the above referred to application, with the exception ofthe adjustable bed plate 30 and the manner oi"- adjustably supportingthe cylinder 21.

It has been found, in machines of this character that it is sometimesdesirable to swing the cushion and the bed plate out of operativeposition with respect to the reciprocating die 12.

To that end the cushion and the bed plate are mounted for pivotalmovement about an upright axis.

The upright member 34 is secured in position in any suitable manner andis provided with a shoulder 53 formed by a collar or in any othersuitable manner and located at a position in proximity to the lower endof the member 34.

Connected with the cylinder 21 are arms 5455 and connected with orformed as a part of the arms is a tubular connecting member 56 whichtelescopes with the upright member 34, stuiling boxes or packing lands5758 being provided for form fluid tight joints between the members 34and A port-ion of the interior of the member 56 which constitutes asleeve is of an internal diameter somewhat great-er than the externaldiameter of the adjacent portion of the member 34 to form an annularspace (see particularly Figure 6 about the member 34. The member isprovided with passages which form communications between the passage 35in the member 34 and the annular space 59 in the sleeve or portion 56and the passages 60 are arranged transversely with respect to thepassage 35. The annular space 59 of a length considerably grezter thanthe diameter of the passages 60 so that the sleeve or portion 56 whichtelescopes with the member 34 may be moved longitudinally with respectto the latter and at the same time maintain a constant communicationbetween the interior of the reservoir 32 and the passage 36, so that thecylinder 21 may be adjusted vertically and at the same time maintain thepassage 36 in constant communica' tion with the reservoir 32.

Any suitable means may be provided for vertically adjusting the bedplate 30 and the cylinder 21.

A simple and eiiicient means for that purpose embodies an upright screw61 which is threaded into a suitable bearing 62. The screw is providedwith a head or collar 63 adjacent the upper end thereof. and if desireda projection 64 may extend above the head or collar. The screw 61 isadjusted so that the cylinder 21 will rest upon the head 63 and theprojection. 64 will enter a groove or slot 65 in the bottom of thecylinder and which groove or slot is open at the ends and is constructedupon an are described from the center of the pivot formed by theco-operating members 34-56.

When it is desired to vertically adjust the cylinder and the bed plate30, the nuts 2'? are first loosened so as to permit of such verticaladjustment, after which the screw 61 may be adjusted in either directionto respectively raise or lower the cushioning device and bed plate.After the proper adjustment has been obtained the nuts 27 are againtightened. During this adjusting movement the heads 23 of the bolts 22will slide in the grooves or slots 24.

In order to swing the bed plate 30" and cushioning device out ofoperative position or from the position shown'in Figure 4 to theposition shown in Figure 5, the nuts 27 are loosened and the screw 61adjusted in its bearing 62 to lower the cylinder 21 and the bed plate 30until the end of the packing gland 58 or the member 56 engages and restsupon the shoulder or collar 53 at the lower end of the upright member34, as indicated in dotted lines in Figure 2 and, after the nuts 27 havebeen removed from the bolts 22, the entire cushioning mechanism and thebed plate 30 may then be swung about an upright axis formed by thetelescoping members 56 and 34, to the position desired, previous towhich, however, the pipe 46 may be disconnected from the pipe 45.

During the swinging movement of the cushioning device and bed plateabout the upright axis the bottom of the cylinder 21 will move out ofengagement with the head or shoulder 63 of the screw 61 and theprojection 64 will pass out of the slot 65. l

The cushion and bed plate maybe repositioned by moving them in theopposite direction about the pivot until the lower face of the cylinder21 is in position to be engaged by the head or collar 63 on the bolt 61.During this repositioning movement the bolts 22 will enter openings inthe flanges 26 and when the cylinder 21 and bed plate 30 have beenproperly positioned by the ad ustment of the screw 61 the nuts 27 aretightened.

Thus it will be seen that with this improved construction the bed plate30 and cushioning device are not only adapted for vertical adjustment inthe machine but they may be readily swung out of position when desiredand as readily swung back into position.

Any suitable means may be provided for limiting the movement of the bedplate 30 in one direction with respect to the cylinder 20 or under theinfluence of the fluid pressure in the cylinder 21.

To that end rods or pins'66 are provided which are secured to and dependfrom the bed plate 30 and pass loosely through ears or projections 67connected to the cylinder 21.

On the free ends of the rods or pins are arranged nuts or heads 68 whichserve as abutments to engage the lower faces of the ears or projections67 and thereby arrest or limit the movement of the bed plate under theinfluence of the pressure in the cylinder 21.

While the preferred form of the invention has been herein shown anddescribed, it is to be understood that various changes may be made inthe details of construction and in the combination and arrangement ofthe several parts, within the scope of the claims,

sure cushion which resists the working stroke of the press, in onedirection, a reservoir within. the machine separate from the cushion andcontaining fluid for said cushion, said reservoir being out ofcommunication with said cushion during the normal opera- 1 tive strokeof the machine, and means adapting the bed of the machine and saidcushion to be swung out of position with respect to the reciprocatingdie.

2. In a metal working press, atfiuid pressure cushion which resiststheworking stroke of the press, in one direction, a reservoir within themachine separate from the cushion andcontaining fluid'for said'cushion,said reservoir being out of communication with said cushion duringthenormal operative strokerofthe machine, and means for bodily andvertically. adjusting the bedof the press and the said cushion.

3. In a metal working press, a fluid pressure cushion which resists theworking stroke of the press, means mounting the press bed plate andcushion for pivotal movement whereby they may be swung out of operationwhen desired, and means whereby fluid may be supplied to the cushionthrough the said pivot.

4'. In a working press, a fluid pressure cushion which resists theworking stroke of the press, means mounting the press bed plate andcushion for pivotal movement whereby they may be swung out of operationwhen desired, variable resistance pres sure creating means forcontrolling the fluid pressure in said cushion, and means wherebyfluidrmay be supplied to the cushion through the said pivot.

5. In a metal working press, a bed plate, a fluid cushion for yieldinglyresisting the movement of. said bed plate in onedirection, meansmounting said plate and cushion for pivotal movement whereby they may beswung out of operation when desired, means whereby fluid may be suppliedto the cushion through the said pivot, and means for verticallyadjusting said bed plate and cushion whenin operative position.

6. Ina metal Working press, a bed plate, fluid pressure cushioning meansfor yieldingly resisting the movement. of said plate in one direction,means mounting said plate and cushion for bodily vertical adjustmentsaidplate being also adapted for bodily vertical movement with respect tosaid cushioning means, and means for limiting the relative movement ofsaid bed plate with re spect to said cushioning means under theinfluence of the pressure in said cushion.

7. In ametalworking press, a bed-plate,

fluid .pressure, cushioningmeansi for ,yieldingly resisting the movementof said plate in one direction, means mounting said plate and cushionfor bodily Vertical adjustment, said plate being also adapted for bodilyver tical movement with respect to said cushioning means, means forlimiting the relative movement of said bed plate with respect to saidcushioning means under the influence of the pressure in said cushion,and means adapting said bed plate and said cushioning means to be swungout of their operative positions in the macnine.

8. In a metal working press, a bed plate, fluid pressure cushioningmeans for yieldingly resisting the movement of said plate in onedirection, means mounting said plate and cushion for bodily verticaladjustment, said plate being also adapted for bodily vertical movementwith respect to said cushioning means, means for limiting the relativemovement of said bed plate with respect to said cushioning means underthe influence of the pressure in said cushion, and means adapting saidbed plate and said cushioning means to be swung about a vertical pivotout of their operative positions in the machine.

9. In a metal working press, a bed plate, fluid pressure cushioningmeans for yieldingly resisting the movement of said plate in onedirection, means mounting said plate and cushion for bodily verticaladjustment, said plate being also adapted for bodily vertical movementwith respect to said cushioning means, means for limiting the relativemovement of said bed plate with respect to said cushioning means underthe influence of the pressure in said cushion, means adapting said bedplate and said cushioning means to be swung about a vertical pivot outor" their operative positions in the machine, and means for supplyingfluid to the cushion through the said pivot.

10. In a metal working press, a pressure pad, a fluid cushion foryieldingly resisting the movement of the pad in one direction, areservoir in the press separate from said cushion for supplying fluid tothe cushion, a connection between the reservoir and cushion, and meansmounting said cushion and said pressure pad for swinging movement out ofoperative position with respect to the machine while the connectionbetween saio reservoir and the said cushion remain constant.

11. In a metal working press, a pressure pad, a fluid cushion foryieldingly resisting the movement or" the pad in one direction, areservoir in the press separate from said cushion for supplying fluid tothe cushion, a connection between the reservoir and cushion, meansmounting said cushion and said pressure pad for swinging movement out ofopera tive position with respect to the machine while the connectionbetween said reservoir and the said cushion remain constant, and meansalso mounting said bed plate and said cushion for bodily verticaladjustment while in operative position in the machine.

12. In a metal working press, a pressure pad, a fluid cushion foryieldingly resisting the movement of the pad in one direction, areservoir in the press separate from said cushion for supplying fluid tothe cushion, a connection between the reservoir and cushion, meansmounting said cushion and said pressure pad for swinging movement out ofoperative position with respect to the machine while the connectionbetween said reservoir and the said cushion remain constant, and meansfor limiting the movement of said pad in the opposite direction withrespect to the cushion.

13. In a metal working press, a pressure pad, a fluid pressure cushionembodying a cylinder and piston for yieldingly resisting the movement ofthe pad in one direction, means pivotally supporting said cushion andsaid pad for swinging movements into and out of operative positions, areservoir for conta ning fluid for the cushion, means whereby the fluidfrom the reservoir may be supplied to the cushion through the said pivotand returned to said reservoir, and variable resistance pressurecreating means for controlling one direction of flow of the fluidbetween the cushion and said reservoir.

In a metal working press, a pressure pad, a fluid pressure cushionembodying a cylinder and piston for yieldingly resisting th movement ofthe pad in one direction, means pivotally supporting said cushion andsaid pad for swinging movements into and out of operative positions, areservoir for con taining fluid for the cushion, means whereby the fluidfrom the reservoir may be supplied to the cushion through the said pivotand returned to said reservoir, and means for vertically adjusting thesaid plate and said cushion when in operative positions in the press,the last said means assisting in supporting the said cushion.

In testimony whereof we have signed our names to this specification, onthis 18th day of April, A1). 1930.

RUDOLPH W. GLASNEI FRIEDRICH J. RODE.

